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A kind of anti-condensate oil anti-salt foam discharge agent and preparation method thereof

A technology for anti-condensate oil and salt bubbles, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of high liquid-carrying capacity of foaming agent and poor foaming effect, so as to enhance stability and reduce The effect of drainage, good liquid carrying capacity

Active Publication Date: 2022-07-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem that the foaming effect of the foaming agent in the prior art is poor when the condensate oil content is higher than 30%, and provides a new anti-condensate oil and salt-resistant foaming agent. The selection and specific ratio design realize that the liquid carrying capacity of the foam discharge agent is still high under high condensate oil content, and the liquid carrying capacity will not decrease with the increase of condensate oil content

Method used

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  • A kind of anti-condensate oil anti-salt foam discharge agent and preparation method thereof
  • A kind of anti-condensate oil anti-salt foam discharge agent and preparation method thereof
  • A kind of anti-condensate oil anti-salt foam discharge agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An anti-condensate anti-salt foam discharge agent is composed of the following raw materials by mass percentage:

[0021] Cocamidopropyl hydroxysulfobetaine 20%;

[0022] Erucamidopropyl Betaine 10%;

[0023] Lauramidopropylamine oxide 5%;

[0024] Sodium Lauryl Sulfate 2%;

[0025] Polyvinylpyrrolidone 1%;

[0026] Sodium chloride 1%;

[0027] The rest is water.

[0028] The preparation method of the foam discharge agent of the present embodiment, the steps are as follows:

[0029] A. Weigh cocamidopropyl hydroxysulfobetaine, erucamidopropyl betaine, lauramidopropyl amine oxide, sodium lauryl sulfate, polyvinyl pyrrolidone, sodium salt and water according to the formula, for subsequent use ;

[0030] B. Cocamidopropyl hydroxysulfobetaine, erucamidopropyl betaine, lauryl amidopropyl amine oxide, sodium salt and water that take by weighing in step A are added in the reactor with stirring paddle, stir , and heated to 30°C;

[0031] C. add the sodium lauryl sulfat...

Embodiment 2

[0034] An anti-condensate anti-salt foam discharge agent is composed of the following raw materials by mass percentage:

[0035] Cocamidopropyl hydroxysulfobetaine 30%;

[0036] Erucamidopropyl Betaine 20%;

[0037] Lauramidopropylamine oxide 15%;

[0038] Sodium Lauryl Sulfate 5%;

[0039] Polyvinylpyrrolidone 2%;

[0040] Sodium chloride 2%;

[0041] The rest is water.

[0042] The preparation method of the foam discharge agent of the present embodiment, the steps are as follows:

[0043] A. Weigh cocamidopropyl hydroxysulfobetaine, erucamidopropyl betaine, lauramidopropyl amine oxide, sodium lauryl sulfate, polyvinyl pyrrolidone, sodium salt and water according to the formula, for subsequent use ;

[0044] B. Cocamidopropyl hydroxysulfobetaine, erucamidopropyl betaine, lauryl amidopropyl amine oxide, sodium salt and water that take by weighing in step A are added in the reactor with stirring paddle, stir , and heated to 30°C;

[0045] C. add the sodium lauryl sulfa...

Embodiment 3

[0048] An anti-condensate anti-salt foam discharge agent is composed of the following raw materials by mass percentage:

[0049] Cocamidopropyl hydroxysulfobetaine 25%;

[0050] Erucamidopropyl Betaine 15%;

[0051] Lauramidopropylamine oxide 10%;

[0052] Sodium Lauryl Sulfate 3.5%;

[0053] Polyvinylpyrrolidone 1.5%;

[0054] Sodium chloride 1.5%;

[0055] The rest is water.

[0056] The preparation method of the foam discharge agent of the present embodiment, the steps are as follows:

[0057] A. Weigh cocamidopropyl hydroxysulfobetaine, erucamidopropyl betaine, lauramidopropyl amine oxide, sodium lauryl sulfate, polyvinyl pyrrolidone, sodium salt and water according to the formula, for subsequent use ;

[0058] B. Cocamidopropyl hydroxysulfobetaine, erucamidopropyl betaine, lauryl amidopropyl amine oxide, sodium salt and water that take by weighing in step A are added in the reactor with stirring paddle, stir , and heated to 50°C;

[0059] C. add the sodium lauryl...

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Abstract

The invention discloses an anti-condensate oil and anti-salt foam discharge agent and a preparation method thereof, belonging to the technical field of materials used for gas well development in the field of oil and gas fields. The foaming agent comprises the following raw materials by mass percentage: 20-30% of cocamidopropyl hydroxysulfobetaine, 10-20% of erucamidopropyl betaine, and 10-20% of lauramidopropyl amine oxide %, sodium lauryl sulfate 2-5%, foam stabilizer 1-2%, sodium salt 1-2%, and the balance is water. The foam discharge agent of the invention is suitable for gas well exploitation, and has better anti-condensate and anti-salt capabilities.

Description

technical field [0001] The invention relates to a foam discharge agent, in particular to an anti-condensate oil anti-salt foam discharge agent and a preparation method thereof, belonging to the technical field of materials used for gas well development in the field of oil and gas fields. Background technique [0002] The flow state of most gas wells during normal production is an annular mist state, and the liquid is carried to the surface by the gas in the form of droplets. The gas is the continuous phase and the liquid is the discontinuous phase. When the flow rate of the gas phase is too low to provide enough energy to continuously bring the liquid phase out of the wellhead, the liquid phase will slip out of the gas phase, flow in the opposite direction to the gas flow and accumulate at the bottom of the well, forming bottom-hole fluid accumulation. Fluid accumulation in the wellbore will increase the backpressure to the bottom of the well, limiting the well's productivit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584C09K8/60
CPCC09K8/584C09K8/602
Inventor 王旭周兴付李祖友冯玉军殷鸿尧鲁光亮苏黎晖杨筱璧瞿超超王浩儒刘大永王雨生姚远唐雷王远东聂岚
Owner CHINA PETROLEUM & CHEM CORP
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